{
  "affected": [],
  "aliases": [
    "CVE-2023-28828"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-04-11T10:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability has been identified in Polarion ALM (All versions \u003c V2304.0). The application contains a XML External Entity Injection (XXE) vulnerability. This could allow an attacker to view files on the application server filesystem.",
  "id": "GHSA-28cv-g234-w9cx",
  "modified": "2023-04-11T12:30:26Z",
  "published": "2023-04-11T12:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28828"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-632164.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

{
  "GSD": {
    "alias": "CVE-2023-28828",
    "id": "GSD-2023-28828"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-28828"
      ],
      "details": "A vulnerability has been identified in Polarion ALM (All versions \u003c V22R2). The application contains a XML External Entity Injection (XXE) vulnerability. This could allow an attacker to view files on the application server filesystem.",
      "id": "GSD-2023-28828",
      "modified": "2023-12-13T01:20:47.494327Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "productcert@siemens.com",
        "ID": "CVE-2023-28828",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Polarion ALM",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "All versions \u003c V22R2"
                        }
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              "vendor_name": "Siemens"
            }
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      "data_format": "MITRE",
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          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-611",
                "lang": "eng",
                "value": "CWE-611: Improper Restriction of XML External Entity Reference"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-632164.pdf",
            "refsource": "MISC",
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-632164.pdf"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:siemens:polarion_alm:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2304.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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      "cve": {
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        "description": {
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              "value": "A vulnerability has been identified in Polarion ALM (All versions \u003c V22R2). The application contains a XML External Entity Injection (XXE) vulnerability. This could allow an attacker to view files on the application server filesystem."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
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                  "lang": "en",
                  "value": "CWE-611"
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-632164.pdf",
              "refsource": "MISC",
              "tags": [
                "Mitigation",
                "Vendor Advisory"
              ],
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-632164.pdf"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-05-09T13:15Z",
      "publishedDate": "2023-04-11T10:15Z"
    }
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}

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Cale Anderson"
        ],
        "summary": "reporting this vulnerability to Siemens"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited",
      "tlp": {
        "label": "WHITE",
        "url": "https://us-cert.cisa.gov/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov",
        "title": "CISA Disclaimer"
      },
      {
        "category": "legal_disclaimer",
        "text": "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
        "title": "Legal Notice"
      },
      {
        "category": "summary",
        "text": "Successful exploitation of this vulnerability may allow an attacker to potentially disclose confidential data. ",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Critical Manufacturing",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "Germany",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.  CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA also provides a section for control systems security recommended practices on the ICS webpage at cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA also recommends users take the following measures to protect themselves from social engineering attacks:",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Do not click web links or open attachments in unsolicited email messages.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "No known public exploits specifically target this vulnerability. This vulnerability has a high attack complexity.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories",
        "title": "Additional Resources"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SSA-632164: External Entity Injection Vulnerability in Polarion ALM - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-632164.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-103-12 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-103-12.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-23-103-12 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-103-12"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://us-cert.cisa.gov/ics/Recommended-Practices"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://cisa.gov/ics"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/uscert/ncas/tips/ST04-014"
      },
      {
        "category": "external",
        "summary": "SSA-632164: External Entity Injection Vulnerability in Polarion ALM - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-632164.html"
      },
      {
        "category": "external",
        "summary": "SSA-632164: External Entity Injection Vulnerability in Polarion ALM - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-632164.pdf"
      },
      {
        "category": "external",
        "summary": "SSA-632164: External Entity Injection Vulnerability in Polarion ALM - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-632164.txt"
      }
    ],
    "title": "Siemens Polarion ALM",
    "tracking": {
      "current_release_date": "2023-04-20T19:52:36.686647Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-23-103-12",
      "initial_release_date": "2023-04-20T19:52:36.686647Z",
      "revision_history": [
        {
          "date": "2023-04-20T19:52:36.686647Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "CSAF Creation Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV22R2",
                "product": {
                  "name": "Polarion ALM",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "Polarion ALM"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-28828",
      "cwe": {
        "id": "CWE-611",
        "name": "Improper Restriction of XML External Entity Reference"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The application contains a XML External Entity Injection (XXE) vulnerability. This could allow an attacker to view files on the application server filesystem.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-28828"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Set the below configurations to mitigate against external entity injection in OpenSAML 4.x parser configuration. This will be included by default on Polarion V2304 and later versions.  \n\n\nparserPool.setMaxPoolSize(100);\n\nparserPool.setCoalescing(true);\n\nparserPool.setIgnoreComments(true);\n\nparserPool.setIgnoreElementContentWhitespace(true);\n\nparserPool.setNamespaceAware(true);\n\nparserPool.setExpandEntityReferences(false);\n\nparserPool.setXincludeAware(false);\n\nfinal Map\u0026lt;String, Boolean\u0026gt; features = new\nHashMap\u0026lt;String, Boolean\u0026gt;();\n\nfeatures.put(http://xml.org/sax/features/external-general-entities, Boolean.FALSE);\n\nfeatures.put(http://xml.org/sax/features/external-parameter-entities, Boolean.FALSE);\n\nfeatures.put(http://apache.org/xml/features/disallow-doctype-decl, Boolean.TRUE);\n\nfeatures.put(http://apache.org/xml/features/validation/schema/normalized-value, Boolean.FALSE);\n\nfeatures.put(http://javax.xml.XMLConstants/feature/secure-processing, Boolean.TRUE);\n\nparserPool.setBuilderFeatures(features);",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V22R2 or later version",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://support.sw.siemens.com/"
        },
        {
          "category": "mitigation",
          "details": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens\u0027 operational guidelines for Industrial Security (Download: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
          "product_ids": [
            "CSAFPID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ],
      "title": "CVE-2023-28828"
    }
  ]
}